635279865852 has 24 divisors (see below), whose sum is σ = 1483408865232. Its totient is φ = 211604358400.

The previous prime is 635279865797. The next prime is 635279865919. The reversal of 635279865852 is 258568972536.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19432599 + ... + 19465262.

It is an arithmetic number, because the mean of its divisors is an integer number (61808702718).

Almost surely, 2^635279865852 is an apocalyptic number.

It is an amenable number.

635279865852 is an abundant number, since it is smaller than the sum of its proper divisors (848128999380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

635279865852 is a wasteful number, since it uses less digits than its factorization.

635279865852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38899229 (or 38899227 counting only the distinct ones).

The product of its digits is 217728000, while the sum is 66.

The spelling of 635279865852 in words is "six hundred thirty-five billion, two hundred seventy-nine million, eight hundred sixty-five thousand, eight hundred fifty-two".